Rickettsia is a ______

Answer

**Step-by-Step Solution:**

1. **Identify the Organism:** The question asks about Rickettsia, which is a specific type of organism.

2. **Determine the Classification:** Rickettsia is classified as a bacteria. This classification is important as it distinguishes Rickettsia from other types of organisms such as viruses, fungi, or protozoa.

3. **Understand the Diseases Caused:** Rickettsia is known to cause several diseases, including Rocky Mountain spotted fever and Q fever. This information helps to contextualize the significance of Rickettsia in medical microbiology.

4. **Identify Vectors and Reservoirs:** For Rocky Mountain spotted fever, the vector is ticks, which carry and transmit Rickettsia to animals. For Q fever, while the vector is not known, the reservoirs include cattle and sheep. This illustrates the ecological relationships involving Rickettsia.

5. **Conclude the Answer:** Based on the classification and the information gathered, we conclude that Rickettsia is a bacteria.

**Final Answer:** Rickettsia is a bacteria.

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